原子吸收分光光度法检测室内积尘中的铅的研究

A Research on Atomic Absorption Spectrophotometric Determination of Lead in Indoor Dust

应用小板刷法采集一般居民家室内积尘,采用普通酸分解法处理样品,以磷酸二氢铵和硝酸镁做基体改进剂,采用石墨炉原子吸收分光光度法测定室内积尘中铅。同时采用质控样品检测,加标回收等质量控制方法。结论:该方法标准曲线线性好,加标回收率高,重现性好,适用于室内积尘中铅的测定。

Using small brush method to collect general residents＇ indoor dust and using common acid decomposition method to process samples,with ammonium dihydrogen phosphate and magnesium nitrate as matrix modifier,graphite furnace atomic absorption spectrophotometric method was adopted to determine the lead in indoor dust.At the same time,quality control method such as quality control sample detection and recovery were used.It was concluded that the method＇s standard curve had good linearity,high recovery and good repeatability,and was suitable for the determination of lead in indoor dust.